I ordered this in a very groovy place here in Sydney called Bodega 1904 we just opened in a new residential precinct 10 minutes away. It was a racetrack & light industrial that was converted to a whole new suburb. The old tram sheds ( think light rail cars) was kept intact outside but gutted to take a bunch of restaurants, supermarket,pub,cafe,medical centre ,gym.
This is 60% pigs blood,40 % pigs head meat .Spanish flavours ,salsa verde ,yoghurt . It was really something. I also had a smoked pigs head sausage that was just brilliant .Heads come in in 6 packs heavily salted ,left for a few days .Cold smoked then stripped then made into sausage. Grilled.
I think this is really old school Spanish /Argentinian cooking updated. $2 on the new light rail from my house. The place with the whole spit roasted lamb & pig thats part restaurant part butcher shop will be next outing.